Whorl Maggots ( Hydrellia philippina )

Symptoms

• Infestation is common in the nurseries and in the main fields up to 6 weeks after transplantation.
• Yellowish patches and streaks are seen along the margins of leaves, which may become deformed.
• Adult flies are more attracted to standing water.

Chemical Control

Sl.No	Generic Name	Trade Name	Color code	Dosage/litre	Knapsack Sprayer (Capacity 10L)	Dosage/acre (200 L)	Dosage/hectare (500 L)	Remarks
1	Malathion 50 EC	Agromala, Agromala Malathion, Celthion, Hilmala, Kthion, Malaacid, Simala Milthion, Tagthion Malamar, Thisol	Blue	2 ml/ litre of water	20 ml	400 ml	1000 ml

Extremely Toxic

Highly Toxic

Moderately Toxic

Slightly Toxic